calm black giant schnauzer resting on the shore of a swampy river

active animal autumn beautiful big black breed breeding calm cheerful companion cute dog fall friend friendly frisky fun game german giant happy lake mammal merry muzzle natural nature naughty outdoors park pedigree pet play playful portrait puppy resting riesen river rizen schnauzer shaggy shepherd shore smart swampy terrier thoroughbred training tricksy walk wellgroomed wool